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Finding the Fourth Proportional to 710,332.47, 980,246.48 and 388,034.28

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Solution

The fourth proportional to 710,332.47, 980,246.48 and 388,034.28 is: 535,480.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,332.47 : 980,246.48 = 388,034.28 : x
  2. Step 2: Convert to fraction form
    710,332.47/980,246.48 = 388,034.28/x
  3. Step 3: Cross multiply
    710,332.47x = 980,246.48 × 388,034.28
  4. Step 4: Simplify right side
    710,332.47x = 380,369,235,149.16
  5. Step 5: Solve for x
    x = 380,369,235,149.16/710,332.47
  6. Step 6: Final answer
    x = 535,480.57

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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.