Home / 926,981.60-1,390,472.40-328,618.40

Finding the Fourth Proportional to 926,981.60, 1,390,472.40 and 328,618.40

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Solution

The fourth proportional to 926,981.60, 1,390,472.40 and 328,618.40 is: 492,927.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,981.60 : 1,390,472.40 = 328,618.40 : x
  2. Step 2: Convert to fraction form
    926,981.60/1,390,472.40 = 328,618.40/x
  3. Step 3: Cross multiply
    926,981.60x = 1,390,472.40 × 328,618.40
  4. Step 4: Simplify right side
    926,981.60x = 456,934,815,332.16
  5. Step 5: Solve for x
    x = 456,934,815,332.16/926,981.60
  6. Step 6: Final answer
    x = 492,927.60

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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.