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Finding the Fourth Proportional to 480,305.61, 662,392.65 and 398,504.34

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Solution

The fourth proportional to 480,305.61, 662,392.65 and 398,504.34 is: 549,579.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,305.61 : 662,392.65 = 398,504.34 : x
  2. Step 2: Convert to fraction form
    480,305.61/662,392.65 = 398,504.34/x
  3. Step 3: Cross multiply
    480,305.61x = 662,392.65 × 398,504.34
  4. Step 4: Simplify right side
    480,305.61x = 263,966,347,303.49
  5. Step 5: Solve for x
    x = 263,966,347,303.49/480,305.61
  6. Step 6: Final answer
    x = 549,579.98

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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.