Home / 862,712.47-1,190,547.95-500,351.21

Finding the Fourth Proportional to 862,712.47, 1,190,547.95 and 500,351.21

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Solution

The fourth proportional to 862,712.47, 1,190,547.95 and 500,351.21 is: 690,487.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,712.47 : 1,190,547.95 = 500,351.21 : x
  2. Step 2: Convert to fraction form
    862,712.47/1,190,547.95 = 500,351.21/x
  3. Step 3: Cross multiply
    862,712.47x = 1,190,547.95 × 500,351.21
  4. Step 4: Simplify right side
    862,712.47x = 595,692,107,345.52
  5. Step 5: Solve for x
    x = 595,692,107,345.52/862,712.47
  6. Step 6: Final answer
    x = 690,487.42

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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.