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Finding the Fourth Proportional to 720,030.38, 992,897.67 and 618,392.38

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Solution

The fourth proportional to 720,030.38, 992,897.67 and 618,392.38 is: 852,742.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,030.38 : 992,897.67 = 618,392.38 : x
  2. Step 2: Convert to fraction form
    720,030.38/992,897.67 = 618,392.38/x
  3. Step 3: Cross multiply
    720,030.38x = 992,897.67 × 618,392.38
  4. Step 4: Simplify right side
    720,030.38x = 614,000,353,247.76
  5. Step 5: Solve for x
    x = 614,000,353,247.76/720,030.38
  6. Step 6: Final answer
    x = 852,742.29

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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.