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Finding the Fourth Proportional to 657,527.04, 907,053 and 399,335.30

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Solution

The fourth proportional to 657,527.04, 907,053 and 399,335.30 is: 550,879.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,527.04 : 907,053 = 399,335.30 : x
  2. Step 2: Convert to fraction form
    657,527.04/907,053 = 399,335.30/x
  3. Step 3: Cross multiply
    657,527.04x = 907,053 × 399,335.30
  4. Step 4: Simplify right side
    657,527.04x = 362,218,281,870.90
  5. Step 5: Solve for x
    x = 362,218,281,870.90/657,527.04
  6. Step 6: Final answer
    x = 550,879.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.