Home / 1,312,878.16-1,812,377.19-768,938.86

Finding the Fourth Proportional to 1,312,878.16, 1,812,377.19 and 768,938.86

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Solution

The fourth proportional to 1,312,878.16, 1,812,377.19 and 768,938.86 is: 1,061,490.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,878.16 : 1,812,377.19 = 768,938.86 : x
  2. Step 2: Convert to fraction form
    1,312,878.16/1,812,377.19 = 768,938.86/x
  3. Step 3: Cross multiply
    1,312,878.16x = 1,812,377.19 × 768,938.86
  4. Step 4: Simplify right side
    1,312,878.16x = 1,393,607,250,368.60
  5. Step 5: Solve for x
    x = 1,393,607,250,368.60/1,312,878.16
  6. Step 6: Final answer
    x = 1,061,490.16

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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.