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Finding the Fourth Proportional to 486,574.72, 671,789.06 and 435,499

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Solution

The fourth proportional to 486,574.72, 671,789.06 and 435,499 is: 601,271.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,574.72 : 671,789.06 = 435,499 : x
  2. Step 2: Convert to fraction form
    486,574.72/671,789.06 = 435,499/x
  3. Step 3: Cross multiply
    486,574.72x = 671,789.06 × 435,499
  4. Step 4: Simplify right side
    486,574.72x = 292,563,463,840.94
  5. Step 5: Solve for x
    x = 292,563,463,840.94/486,574.72
  6. Step 6: Final answer
    x = 601,271.40

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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.