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Finding the Fourth Proportional to 710,565.62, 980,583.10 and 388,275.71

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Solution

The fourth proportional to 710,565.62, 980,583.10 and 388,275.71 is: 535,821.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,565.62 : 980,583.10 = 388,275.71 : x
  2. Step 2: Convert to fraction form
    710,565.62/980,583.10 = 388,275.71/x
  3. Step 3: Cross multiply
    710,565.62x = 980,583.10 × 388,275.71
  4. Step 4: Simplify right side
    710,565.62x = 380,736,599,366.50
  5. Step 5: Solve for x
    x = 380,736,599,366.50/710,565.62
  6. Step 6: Final answer
    x = 535,821.87

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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.