Home / 1,121,278,498.80-1,681,902,001.80-507,861,740.40

Finding the Fourth Proportional to 1,121,278,498.80, 1,681,902,001.80 and 507,861,740.40

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Solution

The fourth proportional to 1,121,278,498.80, 1,681,902,001.80 and 507,861,740.40 is: 761,785,478.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,278,498.80 : 1,681,902,001.80 = 507,861,740.40 : x
  2. Step 2: Convert to fraction form
    1,121,278,498.80/1,681,902,001.80 = 507,861,740.40/x
  3. Step 3: Cross multiply
    1,121,278,498.80x = 1,681,902,001.80 × 507,861,740.40
  4. Step 4: Simplify right side
    1,121,278,498.80x = 854,173,677,816,391,808
  5. Step 5: Solve for x
    x = 854,173,677,816,391,808/1,121,278,498.80
  6. Step 6: Final answer
    x = 761,785,478.57

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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.