Home / 1,287,248,045.55-1,930,872,068.33-771,270,010.35

Finding the Fourth Proportional to 1,287,248,045.55, 1,930,872,068.33 and 771,270,010.35

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Solution

The fourth proportional to 1,287,248,045.55, 1,930,872,068.33 and 771,270,010.35 is: 1,156,905,015.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,248,045.55 : 1,930,872,068.33 = 771,270,010.35 : x
  2. Step 2: Convert to fraction form
    1,287,248,045.55/1,930,872,068.33 = 771,270,010.35/x
  3. Step 3: Cross multiply
    1,287,248,045.55x = 1,930,872,068.33 × 771,270,010.35
  4. Step 4: Simplify right side
    1,287,248,045.55x = 1,489,223,720,121,548,800
  5. Step 5: Solve for x
    x = 1,489,223,720,121,548,800/1,287,248,045.55
  6. Step 6: Final answer
    x = 1,156,905,015.53

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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.