Home / 716,837.56-989,235.78-390,152.91

Finding the Fourth Proportional to 716,837.56, 989,235.78 and 390,152.91

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Solution

The fourth proportional to 716,837.56, 989,235.78 and 390,152.91 is: 538,410.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,837.56 : 989,235.78 = 390,152.91 : x
  2. Step 2: Convert to fraction form
    716,837.56/989,235.78 = 390,152.91/x
  3. Step 3: Cross multiply
    716,837.56x = 989,235.78 × 390,152.91
  4. Step 4: Simplify right side
    716,837.56x = 385,953,216,292.36
  5. Step 5: Solve for x
    x = 385,953,216,292.36/716,837.56
  6. Step 6: Final answer
    x = 538,410.98

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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.