Home / 1,918,547.30-2,878,153.40-781,927.86

Finding the Fourth Proportional to 1,918,547.30, 2,878,153.40 and 781,927.86

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Solution

The fourth proportional to 1,918,547.30, 2,878,153.40 and 781,927.86 is: 1,173,027.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,547.30 : 2,878,153.40 = 781,927.86 : x
  2. Step 2: Convert to fraction form
    1,918,547.30/2,878,153.40 = 781,927.86/x
  3. Step 3: Cross multiply
    1,918,547.30x = 2,878,153.40 × 781,927.86
  4. Step 4: Simplify right side
    1,918,547.30x = 2,250,508,339,362.45
  5. Step 5: Solve for x
    x = 2,250,508,339,362.45/1,918,547.30
  6. Step 6: Final answer
    x = 1,173,027.29

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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.