Home / 716,837.06-989,235.09-390,152.41

Finding the Fourth Proportional to 716,837.06, 989,235.09 and 390,152.41

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Solution

The fourth proportional to 716,837.06, 989,235.09 and 390,152.41 is: 538,410.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,837.06 : 989,235.09 = 390,152.41 : x
  2. Step 2: Convert to fraction form
    716,837.06/989,235.09 = 390,152.41/x
  3. Step 3: Cross multiply
    716,837.06x = 989,235.09 × 390,152.41
  4. Step 4: Simplify right side
    716,837.06x = 385,952,452,461.14
  5. Step 5: Solve for x
    x = 385,952,452,461.14/716,837.06
  6. Step 6: Final answer
    x = 538,410.30

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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.