Home / 1,438,485,259.20-1,985,109,581.88-778,435,537.20

Finding the Fourth Proportional to 1,438,485,259.20, 1,985,109,581.88 and 778,435,537.20

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Solution

The fourth proportional to 1,438,485,259.20, 1,985,109,581.88 and 778,435,537.20 is: 1,074,241,000.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,485,259.20 : 1,985,109,581.88 = 778,435,537.20 : x
  2. Step 2: Convert to fraction form
    1,438,485,259.20/1,985,109,581.88 = 778,435,537.20/x
  3. Step 3: Cross multiply
    1,438,485,259.20x = 1,985,109,581.88 × 778,435,537.20
  4. Step 4: Simplify right side
    1,438,485,259.20x = 1,545,279,843,771,625,472
  5. Step 5: Solve for x
    x = 1,545,279,843,771,625,472/1,438,485,259.20
  6. Step 6: Final answer
    x = 1,074,241,000.31

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.