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Finding the Fourth Proportional to 710,210.22, 980,084.28 and 387,920.52

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Solution

The fourth proportional to 710,210.22, 980,084.28 and 387,920.52 is: 535,327.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,210.22 : 980,084.28 = 387,920.52 : x
  2. Step 2: Convert to fraction form
    710,210.22/980,084.28 = 387,920.52/x
  3. Step 3: Cross multiply
    710,210.22x = 980,084.28 × 387,920.52
  4. Step 4: Simplify right side
    710,210.22x = 380,194,803,541.43
  5. Step 5: Solve for x
    x = 380,194,803,541.43/710,210.22
  6. Step 6: Final answer
    x = 535,327.14

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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.