Home / 528,037,063.10-792,055,594.65-390,287,555.90

Finding the Fourth Proportional to 528,037,063.10, 792,055,594.65 and 390,287,555.90

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Solution

The fourth proportional to 528,037,063.10, 792,055,594.65 and 390,287,555.90 is: 585,431,333.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,037,063.10 : 792,055,594.65 = 390,287,555.90 : x
  2. Step 2: Convert to fraction form
    528,037,063.10/792,055,594.65 = 390,287,555.90/x
  3. Step 3: Cross multiply
    528,037,063.10x = 792,055,594.65 × 390,287,555.90
  4. Step 4: Simplify right side
    528,037,063.10x = 309,129,442,172,869,568
  5. Step 5: Solve for x
    x = 309,129,442,172,869,568/528,037,063.10
  6. Step 6: Final answer
    x = 585,431,333.85

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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.