Home / 688,555.80-1,032,828.30-407,871

Finding the Fourth Proportional to 688,555.80, 1,032,828.30 and 407,871

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Solution

The fourth proportional to 688,555.80, 1,032,828.30 and 407,871 is: 611,803.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,555.80 : 1,032,828.30 = 407,871 : x
  2. Step 2: Convert to fraction form
    688,555.80/1,032,828.30 = 407,871/x
  3. Step 3: Cross multiply
    688,555.80x = 1,032,828.30 × 407,871
  4. Step 4: Simplify right side
    688,555.80x = 421,260,711,549.30
  5. Step 5: Solve for x
    x = 421,260,711,549.30/688,555.80
  6. Step 6: Final answer
    x = 611,803.30

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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.