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Finding the Fourth Proportional to 971,574.40, 1,457,102.40 and 340,422.40

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Solution

The fourth proportional to 971,574.40, 1,457,102.40 and 340,422.40 is: 510,542.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,574.40 : 1,457,102.40 = 340,422.40 : x
  2. Step 2: Convert to fraction form
    971,574.40/1,457,102.40 = 340,422.40/x
  3. Step 3: Cross multiply
    971,574.40x = 1,457,102.40 × 340,422.40
  4. Step 4: Simplify right side
    971,574.40x = 496,030,296,053.76
  5. Step 5: Solve for x
    x = 496,030,296,053.76/971,574.40
  6. Step 6: Final answer
    x = 510,542.78

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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.