Home / 873,490.72-1,205,324.40-491,510.92

Finding the Fourth Proportional to 873,490.72, 1,205,324.40 and 491,510.92

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Solution

The fourth proportional to 873,490.72, 1,205,324.40 and 491,510.92 is: 678,232.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,490.72 : 1,205,324.40 = 491,510.92 : x
  2. Step 2: Convert to fraction form
    873,490.72/1,205,324.40 = 491,510.92/x
  3. Step 3: Cross multiply
    873,490.72x = 1,205,324.40 × 491,510.92
  4. Step 4: Simplify right side
    873,490.72x = 592,430,104,742.45
  5. Step 5: Solve for x
    x = 592,430,104,742.45/873,490.72
  6. Step 6: Final answer
    x = 678,232.85

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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.