Home / 928,320.64-1,391,031.60-644,564.32

Finding the Fourth Proportional to 928,320.64, 1,391,031.60 and 644,564.32

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Solution

The fourth proportional to 928,320.64, 1,391,031.60 and 644,564.32 is: 965,840.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,320.64 : 1,391,031.60 = 644,564.32 : x
  2. Step 2: Convert to fraction form
    928,320.64/1,391,031.60 = 644,564.32/x
  3. Step 3: Cross multiply
    928,320.64x = 1,391,031.60 × 644,564.32
  4. Step 4: Simplify right side
    928,320.64x = 896,609,337,352.51
  5. Step 5: Solve for x
    x = 896,609,337,352.51/928,320.64
  6. Step 6: Final answer
    x = 965,840.14

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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.