Home / 725,905.40-1,087,545.90-620,929.40

Finding the Fourth Proportional to 725,905.40, 1,087,545.90 and 620,929.40

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Solution

The fourth proportional to 725,905.40, 1,087,545.90 and 620,929.40 is: 930,271.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,905.40 : 1,087,545.90 = 620,929.40 : x
  2. Step 2: Convert to fraction form
    725,905.40/1,087,545.90 = 620,929.40/x
  3. Step 3: Cross multiply
    725,905.40x = 1,087,545.90 × 620,929.40
  4. Step 4: Simplify right side
    725,905.40x = 675,289,223,159.46
  5. Step 5: Solve for x
    x = 675,289,223,159.46/725,905.40
  6. Step 6: Final answer
    x = 930,271.66

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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.