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Finding the Fourth Proportional to 579,576.40, 867,521.40 and 413,688.40

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Solution

The fourth proportional to 579,576.40, 867,521.40 and 413,688.40 is: 619,216.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,576.40 : 867,521.40 = 413,688.40 : x
  2. Step 2: Convert to fraction form
    579,576.40/867,521.40 = 413,688.40/x
  3. Step 3: Cross multiply
    579,576.40x = 867,521.40 × 413,688.40
  4. Step 4: Simplify right side
    579,576.40x = 358,883,539,931.76
  5. Step 5: Solve for x
    x = 358,883,539,931.76/579,576.40
  6. Step 6: Final answer
    x = 619,216.97

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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.