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Finding the Fourth Proportional to 830,368.32, 1,145,902.80 and 467,908.80

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Solution

The fourth proportional to 830,368.32, 1,145,902.80 and 467,908.80 is: 645,711.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,368.32 : 1,145,902.80 = 467,908.80 : x
  2. Step 2: Convert to fraction form
    830,368.32/1,145,902.80 = 467,908.80/x
  3. Step 3: Cross multiply
    830,368.32x = 1,145,902.80 × 467,908.80
  4. Step 4: Simplify right side
    830,368.32x = 536,178,004,064.64
  5. Step 5: Solve for x
    x = 536,178,004,064.64/830,368.32
  6. Step 6: Final answer
    x = 645,711.06

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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.