Home / 1,314,580.20-1,971,870.30-865,807.80

Finding the Fourth Proportional to 1,314,580.20, 1,971,870.30 and 865,807.80

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Solution

The fourth proportional to 1,314,580.20, 1,971,870.30 and 865,807.80 is: 1,298,711.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314,580.20 : 1,971,870.30 = 865,807.80 : x
  2. Step 2: Convert to fraction form
    1,314,580.20/1,971,870.30 = 865,807.80/x
  3. Step 3: Cross multiply
    1,314,580.20x = 1,971,870.30 × 865,807.80
  4. Step 4: Simplify right side
    1,314,580.20x = 1,707,260,686,328.34
  5. Step 5: Solve for x
    x = 1,707,260,686,328.34/1,314,580.20
  6. Step 6: Final answer
    x = 1,298,711.70

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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.