Home / 917,408.04-1,265,980.14-509,536.20

Finding the Fourth Proportional to 917,408.04, 1,265,980.14 and 509,536.20

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Solution

The fourth proportional to 917,408.04, 1,265,980.14 and 509,536.20 is: 703,136.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,408.04 : 1,265,980.14 = 509,536.20 : x
  2. Step 2: Convert to fraction form
    917,408.04/1,265,980.14 = 509,536.20/x
  3. Step 3: Cross multiply
    917,408.04x = 1,265,980.14 × 509,536.20
  4. Step 4: Simplify right side
    917,408.04x = 645,062,709,811.07
  5. Step 5: Solve for x
    x = 645,062,709,811.07/917,408.04
  6. Step 6: Final answer
    x = 703,136.10

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Double scale
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Similar ratio
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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.