Home / 1,390,194.33-1,918,547.22-778,341.74

Finding the Fourth Proportional to 1,390,194.33, 1,918,547.22 and 778,341.74

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Solution

The fourth proportional to 1,390,194.33, 1,918,547.22 and 778,341.74 is: 1,074,155.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,194.33 : 1,918,547.22 = 778,341.74 : x
  2. Step 2: Convert to fraction form
    1,390,194.33/1,918,547.22 = 778,341.74/x
  3. Step 3: Cross multiply
    1,390,194.33x = 1,918,547.22 × 778,341.74
  4. Step 4: Simplify right side
    1,390,194.33x = 1,493,285,373,840.08
  5. Step 5: Solve for x
    x = 1,493,285,373,840.08/1,390,194.33
  6. Step 6: Final answer
    x = 1,074,155.86

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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.