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Finding the Fourth Proportional to 620,352,001.20, 930,528,001.80 and 559,885,825.20

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Solution

The fourth proportional to 620,352,001.20, 930,528,001.80 and 559,885,825.20 is: 839,828,737.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,352,001.20 : 930,528,001.80 = 559,885,825.20 : x
  2. Step 2: Convert to fraction form
    620,352,001.20/930,528,001.80 = 559,885,825.20/x
  3. Step 3: Cross multiply
    620,352,001.20x = 930,528,001.80 × 559,885,825.20
  4. Step 4: Simplify right side
    620,352,001.20x = 520,989,438,159,500,096
  5. Step 5: Solve for x
    x = 520,989,438,159,500,096/620,352,001.20
  6. Step 6: Final answer
    x = 839,828,737.80

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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.