Home / 725,875.20-1,088,812.80-525,254.40

Finding the Fourth Proportional to 725,875.20, 1,088,812.80 and 525,254.40

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Solution

The fourth proportional to 725,875.20, 1,088,812.80 and 525,254.40 is: 787,881.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,875.20 : 1,088,812.80 = 525,254.40 : x
  2. Step 2: Convert to fraction form
    725,875.20/1,088,812.80 = 525,254.40/x
  3. Step 3: Cross multiply
    725,875.20x = 1,088,812.80 × 525,254.40
  4. Step 4: Simplify right side
    725,875.20x = 571,903,713,976.32
  5. Step 5: Solve for x
    x = 571,903,713,976.32/725,875.20
  6. Step 6: Final answer
    x = 787,881.60

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1.5x scale

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.