Home / 712,378.58-983,070.70-385,688.98

Finding the Fourth Proportional to 712,378.58, 983,070.70 and 385,688.98

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Solution

The fourth proportional to 712,378.58, 983,070.70 and 385,688.98 is: 532,244.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,378.58 : 983,070.70 = 385,688.98 : x
  2. Step 2: Convert to fraction form
    712,378.58/983,070.70 = 385,688.98/x
  3. Step 3: Cross multiply
    712,378.58x = 983,070.70 × 385,688.98
  4. Step 4: Simplify right side
    712,378.58x = 379,159,532,128.99
  5. Step 5: Solve for x
    x = 379,159,532,128.99/712,378.58
  6. Step 6: Final answer
    x = 532,244.43

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Double scale
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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.