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Finding the Fourth Proportional to 611,870.60, 917,222.70 and 476,859.80

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Solution

The fourth proportional to 611,870.60, 917,222.70 and 476,859.80 is: 714,835.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,870.60 : 917,222.70 = 476,859.80 : x
  2. Step 2: Convert to fraction form
    611,870.60/917,222.70 = 476,859.80/x
  3. Step 3: Cross multiply
    611,870.60x = 917,222.70 × 476,859.80
  4. Step 4: Simplify right side
    611,870.60x = 437,386,633,277.46
  5. Step 5: Solve for x
    x = 437,386,633,277.46/611,870.60
  6. Step 6: Final answer
    x = 714,835.18

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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.