Home / 661,837.50-913,032.40-389,775.16

Finding the Fourth Proportional to 661,837.50, 913,032.40 and 389,775.16

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Solution

The fourth proportional to 661,837.50, 913,032.40 and 389,775.16 is: 537,711.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,837.50 : 913,032.40 = 389,775.16 : x
  2. Step 2: Convert to fraction form
    661,837.50/913,032.40 = 389,775.16/x
  3. Step 3: Cross multiply
    661,837.50x = 913,032.40 × 389,775.16
  4. Step 4: Simplify right side
    661,837.50x = 355,877,343,281.15
  5. Step 5: Solve for x
    x = 355,877,343,281.15/661,837.50
  6. Step 6: Final answer
    x = 537,711.06

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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.