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Finding the Fourth Proportional to 704,433.50, 972,118.23 and 402,633.98

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Solution

The fourth proportional to 704,433.50, 972,118.23 and 402,633.98 is: 555,634.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,433.50 : 972,118.23 = 402,633.98 : x
  2. Step 2: Convert to fraction form
    704,433.50/972,118.23 = 402,633.98/x
  3. Step 3: Cross multiply
    704,433.50x = 972,118.23 × 402,633.98
  4. Step 4: Simplify right side
    704,433.50x = 391,407,831,975.46
  5. Step 5: Solve for x
    x = 391,407,831,975.46/704,433.50
  6. Step 6: Final answer
    x = 555,634.89

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1.5x scale

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.