Home / 813,564,058.60-1,220,346,087.90-425,505,840.40

Finding the Fourth Proportional to 813,564,058.60, 1,220,346,087.90 and 425,505,840.40

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Solution

The fourth proportional to 813,564,058.60, 1,220,346,087.90 and 425,505,840.40 is: 638,258,760.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,564,058.60 : 1,220,346,087.90 = 425,505,840.40 : x
  2. Step 2: Convert to fraction form
    813,564,058.60/1,220,346,087.90 = 425,505,840.40/x
  3. Step 3: Cross multiply
    813,564,058.60x = 1,220,346,087.90 × 425,505,840.40
  4. Step 4: Simplify right side
    813,564,058.60x = 519,264,387,710,741,760
  5. Step 5: Solve for x
    x = 519,264,387,710,741,760/813,564,058.60
  6. Step 6: Final answer
    x = 638,258,760.60

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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.