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Finding the Fourth Proportional to 970,840.80, 1,455,224.40 and 371,570.40

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Solution

The fourth proportional to 970,840.80, 1,455,224.40 and 371,570.40 is: 556,958.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,840.80 : 1,455,224.40 = 371,570.40 : x
  2. Step 2: Convert to fraction form
    970,840.80/1,455,224.40 = 371,570.40/x
  3. Step 3: Cross multiply
    970,840.80x = 1,455,224.40 × 371,570.40
  4. Step 4: Simplify right side
    970,840.80x = 540,718,312,397.76
  5. Step 5: Solve for x
    x = 540,718,312,397.76/970,840.80
  6. Step 6: Final answer
    x = 556,958.79

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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.