Home / 627,421.79-865,841.40-340,941.19

Finding the Fourth Proportional to 627,421.79, 865,841.40 and 340,941.19

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Solution

The fourth proportional to 627,421.79, 865,841.40 and 340,941.19 is: 470,498.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,421.79 : 865,841.40 = 340,941.19 : x
  2. Step 2: Convert to fraction form
    627,421.79/865,841.40 = 340,941.19/x
  3. Step 3: Cross multiply
    627,421.79x = 865,841.40 × 340,941.19
  4. Step 4: Simplify right side
    627,421.79x = 295,200,992,938.06
  5. Step 5: Solve for x
    x = 295,200,992,938.06/627,421.79
  6. Step 6: Final answer
    x = 470,498.47

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Double scale
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1.5x scale

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.