Home / 688,123.35-1,031,765.85-308,970.45

Finding the Fourth Proportional to 688,123.35, 1,031,765.85 and 308,970.45

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Solution

The fourth proportional to 688,123.35, 1,031,765.85 and 308,970.45 is: 463,267.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,123.35 : 1,031,765.85 = 308,970.45 : x
  2. Step 2: Convert to fraction form
    688,123.35/1,031,765.85 = 308,970.45/x
  3. Step 3: Cross multiply
    688,123.35x = 1,031,765.85 × 308,970.45
  4. Step 4: Simplify right side
    688,123.35x = 318,785,158,969.13
  5. Step 5: Solve for x
    x = 318,785,158,969.13/688,123.35
  6. Step 6: Final answer
    x = 463,267.46

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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.