Home / 817,931.80-1,226,897.70-218,985.40

Finding the Fourth Proportional to 817,931.80, 1,226,897.70 and 218,985.40

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Solution

The fourth proportional to 817,931.80, 1,226,897.70 and 218,985.40 is: 328,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,931.80 : 1,226,897.70 = 218,985.40 : x
  2. Step 2: Convert to fraction form
    817,931.80/1,226,897.70 = 218,985.40/x
  3. Step 3: Cross multiply
    817,931.80x = 1,226,897.70 × 218,985.40
  4. Step 4: Simplify right side
    817,931.80x = 268,672,683,593.58
  5. Step 5: Solve for x
    x = 268,672,683,593.58/817,931.80
  6. Step 6: Final answer
    x = 328,478.10

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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.