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Finding the Fourth Proportional to 704,548.80, 972,967.56 and 487,313.76

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Solution

The fourth proportional to 704,548.80, 972,967.56 and 487,313.76 is: 672,970.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,548.80 : 972,967.56 = 487,313.76 : x
  2. Step 2: Convert to fraction form
    704,548.80/972,967.56 = 487,313.76/x
  3. Step 3: Cross multiply
    704,548.80x = 972,967.56 × 487,313.76
  4. Step 4: Simplify right side
    704,548.80x = 474,140,480,021.63
  5. Step 5: Solve for x
    x = 474,140,480,021.63/704,548.80
  6. Step 6: Final answer
    x = 672,970.39

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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.