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Finding the Fourth Proportional to 520,737.40, 779,291.70 and 310,526.20

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Solution

The fourth proportional to 520,737.40, 779,291.70 and 310,526.20 is: 464,707.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,737.40 : 779,291.70 = 310,526.20 : x
  2. Step 2: Convert to fraction form
    520,737.40/779,291.70 = 310,526.20/x
  3. Step 3: Cross multiply
    520,737.40x = 779,291.70 × 310,526.20
  4. Step 4: Simplify right side
    520,737.40x = 241,990,490,292.54
  5. Step 5: Solve for x
    x = 241,990,490,292.54/520,737.40
  6. Step 6: Final answer
    x = 464,707.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.