Home / 692,018.08-954,985.12-390,212.16

Finding the Fourth Proportional to 692,018.08, 954,985.12 and 390,212.16

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Solution

The fourth proportional to 692,018.08, 954,985.12 and 390,212.16 is: 538,492.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,018.08 : 954,985.12 = 390,212.16 : x
  2. Step 2: Convert to fraction form
    692,018.08/954,985.12 = 390,212.16/x
  3. Step 3: Cross multiply
    692,018.08x = 954,985.12 × 390,212.16
  4. Step 4: Simplify right side
    692,018.08x = 372,646,806,443.06
  5. Step 5: Solve for x
    x = 372,646,806,443.06/692,018.08
  6. Step 6: Final answer
    x = 538,492.88

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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.