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Finding the Fourth Proportional to 912,595.76, 1,368,155.44 and 557,490

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Solution

The fourth proportional to 912,595.76, 1,368,155.44 and 557,490 is: 835,784.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,595.76 : 1,368,155.44 = 557,490 : x
  2. Step 2: Convert to fraction form
    912,595.76/1,368,155.44 = 557,490/x
  3. Step 3: Cross multiply
    912,595.76x = 1,368,155.44 × 557,490
  4. Step 4: Simplify right side
    912,595.76x = 762,732,976,245.60
  5. Step 5: Solve for x
    x = 762,732,976,245.60/912,595.76
  6. Step 6: Final answer
    x = 835,784.05

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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.