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Finding the Fourth Proportional to 971,573.40, 1,457,100.90 and 340,421.40

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Solution

The fourth proportional to 971,573.40, 1,457,100.90 and 340,421.40 is: 510,541.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,573.40 : 1,457,100.90 = 340,421.40 : x
  2. Step 2: Convert to fraction form
    971,573.40/1,457,100.90 = 340,421.40/x
  3. Step 3: Cross multiply
    971,573.40x = 1,457,100.90 × 340,421.40
  4. Step 4: Simplify right side
    971,573.40x = 496,028,328,319.26
  5. Step 5: Solve for x
    x = 496,028,328,319.26/971,573.40
  6. Step 6: Final answer
    x = 510,541.28

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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.