Home / 915,943,489.20-1,374,496,340.38-391,316,543.71

Finding the Fourth Proportional to 915,943,489.20, 1,374,496,340.38 and 391,316,543.71

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Solution

The fourth proportional to 915,943,489.20, 1,374,496,340.38 and 391,316,543.71 is: 587,223,080.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,943,489.20 : 1,374,496,340.38 = 391,316,543.71 : x
  2. Step 2: Convert to fraction form
    915,943,489.20/1,374,496,340.38 = 391,316,543.71/x
  3. Step 3: Cross multiply
    915,943,489.20x = 1,374,496,340.38 × 391,316,543.71
  4. Step 4: Simplify right side
    915,943,489.20x = 537,863,157,255,130,752
  5. Step 5: Solve for x
    x = 537,863,157,255,130,752/915,943,489.20
  6. Step 6: Final answer
    x = 587,223,080.46

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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.