Home / 528,537,643.20-792,806,464.80-392,488,747.20

Finding the Fourth Proportional to 528,537,643.20, 792,806,464.80 and 392,488,747.20

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Solution

The fourth proportional to 528,537,643.20, 792,806,464.80 and 392,488,747.20 is: 588,733,120.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,537,643.20 : 792,806,464.80 = 392,488,747.20 : x
  2. Step 2: Convert to fraction form
    528,537,643.20/792,806,464.80 = 392,488,747.20/x
  3. Step 3: Cross multiply
    528,537,643.20x = 792,806,464.80 × 392,488,747.20
  4. Step 4: Simplify right side
    528,537,643.20x = 311,167,616,141,412,864
  5. Step 5: Solve for x
    x = 311,167,616,141,412,864/528,537,643.20
  6. Step 6: Final answer
    x = 588,733,120.80

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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.