Home / 528,415,856.10-729,215,585.36-293,466,516.57

Finding the Fourth Proportional to 528,415,856.10, 729,215,585.36 and 293,466,516.57

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Solution

The fourth proportional to 528,415,856.10, 729,215,585.36 and 293,466,516.57 is: 404,984,739.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,415,856.10 : 729,215,585.36 = 293,466,516.57 : x
  2. Step 2: Convert to fraction form
    528,415,856.10/729,215,585.36 = 293,466,516.57/x
  3. Step 3: Cross multiply
    528,415,856.10x = 729,215,585.36 × 293,466,516.57
  4. Step 4: Simplify right side
    528,415,856.10x = 214,000,357,662,685,344
  5. Step 5: Solve for x
    x = 214,000,357,662,685,344/528,415,856.10
  6. Step 6: Final answer
    x = 404,984,739.18

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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.