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Finding the Fourth Proportional to 714,860.34, 986,510.57 and 408,940.08

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Solution

The fourth proportional to 714,860.34, 986,510.57 and 408,940.08 is: 564,339.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,860.34 : 986,510.57 = 408,940.08 : x
  2. Step 2: Convert to fraction form
    714,860.34/986,510.57 = 408,940.08/x
  3. Step 3: Cross multiply
    714,860.34x = 986,510.57 × 408,940.08
  4. Step 4: Simplify right side
    714,860.34x = 403,423,711,416.65
  5. Step 5: Solve for x
    x = 403,423,711,416.65/714,860.34
  6. Step 6: Final answer
    x = 564,339.20

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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.