Home / 457,869.40-686,804.10-191,541.40

Finding the Fourth Proportional to 457,869.40, 686,804.10 and 191,541.40

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Solution

The fourth proportional to 457,869.40, 686,804.10 and 191,541.40 is: 287,312.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,869.40 : 686,804.10 = 191,541.40 : x
  2. Step 2: Convert to fraction form
    457,869.40/686,804.10 = 191,541.40/x
  3. Step 3: Cross multiply
    457,869.40x = 686,804.10 × 191,541.40
  4. Step 4: Simplify right side
    457,869.40x = 131,551,418,839.74
  5. Step 5: Solve for x
    x = 131,551,418,839.74/457,869.40
  6. Step 6: Final answer
    x = 287,312.10

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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.