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Finding the Fourth Proportional to 561,766,158.77, 775,238,574.54 and 310,888,805.90

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Solution

The fourth proportional to 561,766,158.77, 775,238,574.54 and 310,888,805.90 is: 429,027,257.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,766,158.77 : 775,238,574.54 = 310,888,805.90 : x
  2. Step 2: Convert to fraction form
    561,766,158.77/775,238,574.54 = 310,888,805.90/x
  3. Step 3: Cross multiply
    561,766,158.77x = 775,238,574.54 × 310,888,805.90
  4. Step 4: Simplify right side
    561,766,158.77x = 241,012,994,722,482,528
  5. Step 5: Solve for x
    x = 241,012,994,722,482,528/561,766,158.77
  6. Step 6: Final answer
    x = 429,027,257.98

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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.