Home / 917,288.40-1,376,062.20-286,136.40

Finding the Fourth Proportional to 917,288.40, 1,376,062.20 and 286,136.40

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Solution

The fourth proportional to 917,288.40, 1,376,062.20 and 286,136.40 is: 429,245.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,288.40 : 1,376,062.20 = 286,136.40 : x
  2. Step 2: Convert to fraction form
    917,288.40/1,376,062.20 = 286,136.40/x
  3. Step 3: Cross multiply
    917,288.40x = 1,376,062.20 × 286,136.40
  4. Step 4: Simplify right side
    917,288.40x = 393,741,484,084.08
  5. Step 5: Solve for x
    x = 393,741,484,084.08/917,288.40
  6. Step 6: Final answer
    x = 429,245.03

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1.5x scale

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.