Home / 1,287,621,227.72-1,776,960,167.64-723,205,420.40

Finding the Fourth Proportional to 1,287,621,227.72, 1,776,960,167.64 and 723,205,420.40

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Solution

The fourth proportional to 1,287,621,227.72, 1,776,960,167.64 and 723,205,420.40 is: 998,047,560.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,621,227.72 : 1,776,960,167.64 = 723,205,420.40 : x
  2. Step 2: Convert to fraction form
    1,287,621,227.72/1,776,960,167.64 = 723,205,420.40/x
  3. Step 3: Cross multiply
    1,287,621,227.72x = 1,776,960,167.64 × 723,205,420.40
  4. Step 4: Simplify right side
    1,287,621,227.72x = 1,285,107,225,072,140,800
  5. Step 5: Solve for x
    x = 1,285,107,225,072,140,800/1,287,621,227.72
  6. Step 6: Final answer
    x = 998,047,560.42

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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.