Home / 1,020,515,215.50-1,408,746,317.31-686,181,527.10

Finding the Fourth Proportional to 1,020,515,215.50, 1,408,746,317.31 and 686,181,527.10

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Solution

The fourth proportional to 1,020,515,215.50, 1,408,746,317.31 and 686,181,527.10 is: 947,223,211.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,515,215.50 : 1,408,746,317.31 = 686,181,527.10 : x
  2. Step 2: Convert to fraction form
    1,020,515,215.50/1,408,746,317.31 = 686,181,527.10/x
  3. Step 3: Cross multiply
    1,020,515,215.50x = 1,408,746,317.31 × 686,181,527.10
  4. Step 4: Simplify right side
    1,020,515,215.50x = 966,655,699,308,276,992
  5. Step 5: Solve for x
    x = 966,655,699,308,276,992/1,020,515,215.50
  6. Step 6: Final answer
    x = 947,223,211.01

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Double scale
Find fourth proportional to 1,020,515,216.50, 1,408,746,318.69 and 686,181,528.10
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.