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Finding the Fourth Proportional to 514,669.02, 710,271.60 and 285,221.48

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Solution

The fourth proportional to 514,669.02, 710,271.60 and 285,221.48 is: 393,621.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,669.02 : 710,271.60 = 285,221.48 : x
  2. Step 2: Convert to fraction form
    514,669.02/710,271.60 = 285,221.48/x
  3. Step 3: Cross multiply
    514,669.02x = 710,271.60 × 285,221.48
  4. Step 4: Simplify right side
    514,669.02x = 202,584,716,953.97
  5. Step 5: Solve for x
    x = 202,584,716,953.97/514,669.02
  6. Step 6: Final answer
    x = 393,621.35

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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.