Home / 704,554,467.30-972,287,436.78-391,288,681.26

Finding the Fourth Proportional to 704,554,467.30, 972,287,436.78 and 391,288,681.26

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Solution

The fourth proportional to 704,554,467.30, 972,287,436.78 and 391,288,681.26 is: 539,979,641.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,554,467.30 : 972,287,436.78 = 391,288,681.26 : x
  2. Step 2: Convert to fraction form
    704,554,467.30/972,287,436.78 = 391,288,681.26/x
  3. Step 3: Cross multiply
    704,554,467.30x = 972,287,436.78 × 391,288,681.26
  4. Step 4: Simplify right side
    704,554,467.30x = 380,445,068,943,311,808
  5. Step 5: Solve for x
    x = 380,445,068,943,311,808/704,554,467.30
  6. Step 6: Final answer
    x = 539,979,641.89

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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.