Home / 915,943,490.70-1,374,496,342.65-391,316,545.19

Finding the Fourth Proportional to 915,943,490.70, 1,374,496,342.65 and 391,316,545.19

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Solution

The fourth proportional to 915,943,490.70, 1,374,496,342.65 and 391,316,545.19 is: 587,223,082.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,943,490.70 : 1,374,496,342.65 = 391,316,545.19 : x
  2. Step 2: Convert to fraction form
    915,943,490.70/1,374,496,342.65 = 391,316,545.19/x
  3. Step 3: Cross multiply
    915,943,490.70x = 1,374,496,342.65 × 391,316,545.19
  4. Step 4: Simplify right side
    915,943,490.70x = 537,863,160,175,216,000
  5. Step 5: Solve for x
    x = 537,863,160,175,216,000/915,943,490.70
  6. Step 6: Final answer
    x = 587,223,082.69

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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.