Home / 670,531.20-1,005,796.80-644,726.40

Finding the Fourth Proportional to 670,531.20, 1,005,796.80 and 644,726.40

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Solution

The fourth proportional to 670,531.20, 1,005,796.80 and 644,726.40 is: 967,089.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,531.20 : 1,005,796.80 = 644,726.40 : x
  2. Step 2: Convert to fraction form
    670,531.20/1,005,796.80 = 644,726.40/x
  3. Step 3: Cross multiply
    670,531.20x = 1,005,796.80 × 644,726.40
  4. Step 4: Simplify right side
    670,531.20x = 648,463,749,995.52
  5. Step 5: Solve for x
    x = 648,463,749,995.52/670,531.20
  6. Step 6: Final answer
    x = 967,089.60

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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.