Home / 687,852.10-1,031,444.86-288,385.62

Finding the Fourth Proportional to 687,852.10, 1,031,444.86 and 288,385.62

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Solution

The fourth proportional to 687,852.10, 1,031,444.86 and 288,385.62 is: 432,438.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,852.10 : 1,031,444.86 = 288,385.62 : x
  2. Step 2: Convert to fraction form
    687,852.10/1,031,444.86 = 288,385.62/x
  3. Step 3: Cross multiply
    687,852.10x = 1,031,444.86 × 288,385.62
  4. Step 4: Simplify right side
    687,852.10x = 297,453,862,209.84
  5. Step 5: Solve for x
    x = 297,453,862,209.84/687,852.10
  6. Step 6: Final answer
    x = 432,438.69

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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.