Home / 851,349,902.40-1,277,213,810.40-391,177,108.80

Finding the Fourth Proportional to 851,349,902.40, 1,277,213,810.40 and 391,177,108.80

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Solution

The fourth proportional to 851,349,902.40, 1,277,213,810.40 and 391,177,108.80 is: 586,852,484.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,349,902.40 : 1,277,213,810.40 = 391,177,108.80 : x
  2. Step 2: Convert to fraction form
    851,349,902.40/1,277,213,810.40 = 391,177,108.80/x
  3. Step 3: Cross multiply
    851,349,902.40x = 1,277,213,810.40 × 391,177,108.80
  4. Step 4: Simplify right side
    851,349,902.40x = 499,616,805,671,703,424
  5. Step 5: Solve for x
    x = 499,616,805,671,703,424/851,349,902.40
  6. Step 6: Final answer
    x = 586,852,484.82

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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.