Home / 515,119.04-710,898.40-288,779.20

Finding the Fourth Proportional to 515,119.04, 710,898.40 and 288,779.20

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Solution

The fourth proportional to 515,119.04, 710,898.40 and 288,779.20 is: 398,534.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,119.04 : 710,898.40 = 288,779.20 : x
  2. Step 2: Convert to fraction form
    515,119.04/710,898.40 = 288,779.20/x
  3. Step 3: Cross multiply
    515,119.04x = 710,898.40 × 288,779.20
  4. Step 4: Simplify right side
    515,119.04x = 205,292,671,233.28
  5. Step 5: Solve for x
    x = 205,292,671,233.28/515,119.04
  6. Step 6: Final answer
    x = 398,534.43

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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.