Home / 1,264,376.40-1,896,564.60-1,243,381.20

Finding the Fourth Proportional to 1,264,376.40, 1,896,564.60 and 1,243,381.20

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Solution

The fourth proportional to 1,264,376.40, 1,896,564.60 and 1,243,381.20 is: 1,865,071.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264,376.40 : 1,896,564.60 = 1,243,381.20 : x
  2. Step 2: Convert to fraction form
    1,264,376.40/1,896,564.60 = 1,243,381.20/x
  3. Step 3: Cross multiply
    1,264,376.40x = 1,896,564.60 × 1,243,381.20
  4. Step 4: Simplify right side
    1,264,376.40x = 2,358,152,768,225.52
  5. Step 5: Solve for x
    x = 2,358,152,768,225.52/1,264,376.40
  6. Step 6: Final answer
    x = 1,865,071.80

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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.