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Finding the Fourth Proportional to 438,031.80, 657,047.70 and 435,079.35

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Solution

The fourth proportional to 438,031.80, 657,047.70 and 435,079.35 is: 652,619.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,031.80 : 657,047.70 = 435,079.35 : x
  2. Step 2: Convert to fraction form
    438,031.80/657,047.70 = 435,079.35/x
  3. Step 3: Cross multiply
    438,031.80x = 657,047.70 × 435,079.35
  4. Step 4: Simplify right side
    438,031.80x = 285,867,886,235.00
  5. Step 5: Solve for x
    x = 285,867,886,235.00/438,031.80
  6. Step 6: Final answer
    x = 652,619.03

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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.