Home / 916,938.60-1,376,444.70-543,172.20

Finding the Fourth Proportional to 916,938.60, 1,376,444.70 and 543,172.20

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Solution

The fourth proportional to 916,938.60, 1,376,444.70 and 543,172.20 is: 815,372.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,938.60 : 1,376,444.70 = 543,172.20 : x
  2. Step 2: Convert to fraction form
    916,938.60/1,376,444.70 = 543,172.20/x
  3. Step 3: Cross multiply
    916,938.60x = 1,376,444.70 × 543,172.20
  4. Step 4: Simplify right side
    916,938.60x = 747,646,495,877.34
  5. Step 5: Solve for x
    x = 747,646,495,877.34/916,938.60
  6. Step 6: Final answer
    x = 815,372.48

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1.5x scale

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.