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Finding the Fourth Proportional to 659,675.70, 910,450.35 and 417,980.91

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Solution

The fourth proportional to 659,675.70, 910,450.35 and 417,980.91 is: 576,875.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,675.70 : 910,450.35 = 417,980.91 : x
  2. Step 2: Convert to fraction form
    659,675.70/910,450.35 = 417,980.91/x
  3. Step 3: Cross multiply
    659,675.70x = 910,450.35 × 417,980.91
  4. Step 4: Simplify right side
    659,675.70x = 380,550,865,802.82
  5. Step 5: Solve for x
    x = 380,550,865,802.82/659,675.70
  6. Step 6: Final answer
    x = 576,875.68

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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.