Home / 905,410.23-1,249,462.02-497,510.89

Finding the Fourth Proportional to 905,410.23, 1,249,462.02 and 497,510.89

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Solution

The fourth proportional to 905,410.23, 1,249,462.02 and 497,510.89 is: 686,562.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,410.23 : 1,249,462.02 = 497,510.89 : x
  2. Step 2: Convert to fraction form
    905,410.23/1,249,462.02 = 497,510.89/x
  3. Step 3: Cross multiply
    905,410.23x = 1,249,462.02 × 497,510.89
  4. Step 4: Simplify right side
    905,410.23x = 621,620,952,856.53
  5. Step 5: Solve for x
    x = 621,620,952,856.53/905,410.23
  6. Step 6: Final answer
    x = 686,562.77

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Double scale
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Similar ratio
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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.