Home / 687,762.80-1,031,644.20-448,618.40

Finding the Fourth Proportional to 687,762.80, 1,031,644.20 and 448,618.40

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Solution

The fourth proportional to 687,762.80, 1,031,644.20 and 448,618.40 is: 672,927.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,762.80 : 1,031,644.20 = 448,618.40 : x
  2. Step 2: Convert to fraction form
    687,762.80/1,031,644.20 = 448,618.40/x
  3. Step 3: Cross multiply
    687,762.80x = 1,031,644.20 × 448,618.40
  4. Step 4: Simplify right side
    687,762.80x = 462,814,570,373.28
  5. Step 5: Solve for x
    x = 462,814,570,373.28/687,762.80
  6. Step 6: Final answer
    x = 672,927.60

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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.