Home / 514,312.12-709,746.06-287,961.40

Finding the Fourth Proportional to 514,312.12, 709,746.06 and 287,961.40

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Solution

The fourth proportional to 514,312.12, 709,746.06 and 287,961.40 is: 397,384.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,312.12 : 709,746.06 = 287,961.40 : x
  2. Step 2: Convert to fraction form
    514,312.12/709,746.06 = 287,961.40/x
  3. Step 3: Cross multiply
    514,312.12x = 709,746.06 × 287,961.40
  4. Step 4: Simplify right side
    514,312.12x = 204,379,469,082.08
  5. Step 5: Solve for x
    x = 204,379,469,082.08/514,312.12
  6. Step 6: Final answer
    x = 397,384.12

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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.