Home / 813,564,064.60-1,220,346,096.90-425,505,846.40

Finding the Fourth Proportional to 813,564,064.60, 1,220,346,096.90 and 425,505,846.40

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Solution

The fourth proportional to 813,564,064.60, 1,220,346,096.90 and 425,505,846.40 is: 638,258,769.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,564,064.60 : 1,220,346,096.90 = 425,505,846.40 : x
  2. Step 2: Convert to fraction form
    813,564,064.60/1,220,346,096.90 = 425,505,846.40/x
  3. Step 3: Cross multiply
    813,564,064.60x = 1,220,346,096.90 × 425,505,846.40
  4. Step 4: Simplify right side
    813,564,064.60x = 519,264,398,862,370,944
  5. Step 5: Solve for x
    x = 519,264,398,862,370,944/813,564,064.60
  6. Step 6: Final answer
    x = 638,258,769.60

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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.