Home / 861,360.40-1,291,089.10-355,642.56

Finding the Fourth Proportional to 861,360.40, 1,291,089.10 and 355,642.56

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Solution

The fourth proportional to 861,360.40, 1,291,089.10 and 355,642.56 is: 533,070.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,360.40 : 1,291,089.10 = 355,642.56 : x
  2. Step 2: Convert to fraction form
    861,360.40/1,291,089.10 = 355,642.56/x
  3. Step 3: Cross multiply
    861,360.40x = 1,291,089.10 × 355,642.56
  4. Step 4: Simplify right side
    861,360.40x = 459,166,232,712.10
  5. Step 5: Solve for x
    x = 459,166,232,712.10/861,360.40
  6. Step 6: Final answer
    x = 533,070.98

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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.