Home / 913,362.80-1,260,420.75-499,897.58

Finding the Fourth Proportional to 913,362.80, 1,260,420.75 and 499,897.58

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Solution

The fourth proportional to 913,362.80, 1,260,420.75 and 499,897.58 is: 689,847.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,362.80 : 1,260,420.75 = 499,897.58 : x
  2. Step 2: Convert to fraction form
    913,362.80/1,260,420.75 = 499,897.58/x
  3. Step 3: Cross multiply
    913,362.80x = 1,260,420.75 × 499,897.58
  4. Step 4: Simplify right side
    913,362.80x = 630,081,276,404.68
  5. Step 5: Solve for x
    x = 630,081,276,404.68/913,362.80
  6. Step 6: Final answer
    x = 689,847.76

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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.