Home / 876,159.93-1,209,116.45-513,845.12

Finding the Fourth Proportional to 876,159.93, 1,209,116.45 and 513,845.12

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Solution

The fourth proportional to 876,159.93, 1,209,116.45 and 513,845.12 is: 709,115.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,159.93 : 1,209,116.45 = 513,845.12 : x
  2. Step 2: Convert to fraction form
    876,159.93/1,209,116.45 = 513,845.12/x
  3. Step 3: Cross multiply
    876,159.93x = 1,209,116.45 × 513,845.12
  4. Step 4: Simplify right side
    876,159.93x = 621,298,578,729.42
  5. Step 5: Solve for x
    x = 621,298,578,729.42/876,159.93
  6. Step 6: Final answer
    x = 709,115.49

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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.