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Finding the Fourth Proportional to 703,988.16, 971,510.88 and 381,698.88

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Solution

The fourth proportional to 703,988.16, 971,510.88 and 381,698.88 is: 526,748.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,988.16 : 971,510.88 = 381,698.88 : x
  2. Step 2: Convert to fraction form
    703,988.16/971,510.88 = 381,698.88/x
  3. Step 3: Cross multiply
    703,988.16x = 971,510.88 × 381,698.88
  4. Step 4: Simplify right side
    703,988.16x = 370,824,614,803.81
  5. Step 5: Solve for x
    x = 370,824,614,803.81/703,988.16
  6. Step 6: Final answer
    x = 526,748.37

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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.