Home / 877,779.78-1,316,535.12-278,663.28

Finding the Fourth Proportional to 877,779.78, 1,316,535.12 and 278,663.28

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Solution

The fourth proportional to 877,779.78, 1,316,535.12 and 278,663.28 is: 417,952.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,779.78 : 1,316,535.12 = 278,663.28 : x
  2. Step 2: Convert to fraction form
    877,779.78/1,316,535.12 = 278,663.28/x
  3. Step 3: Cross multiply
    877,779.78x = 1,316,535.12 × 278,663.28
  4. Step 4: Simplify right side
    877,779.78x = 366,869,994,774.39
  5. Step 5: Solve for x
    x = 366,869,994,774.39/877,779.78
  6. Step 6: Final answer
    x = 417,952.21

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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.