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Finding the Fourth Proportional to 659,927.80, 910,700.95 and 358,121.80

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Solution

The fourth proportional to 659,927.80, 910,700.95 and 358,121.80 is: 494,208.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,927.80 : 910,700.95 = 358,121.80 : x
  2. Step 2: Convert to fraction form
    659,927.80/910,700.95 = 358,121.80/x
  3. Step 3: Cross multiply
    659,927.80x = 910,700.95 × 358,121.80
  4. Step 4: Simplify right side
    659,927.80x = 326,141,860,303.65
  5. Step 5: Solve for x
    x = 326,141,860,303.65/659,927.80
  6. Step 6: Final answer
    x = 494,208.40

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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.