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Finding the Fourth Proportional to 692,022.08, 954,990.60 and 390,216.08

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Solution

The fourth proportional to 692,022.08, 954,990.60 and 390,216.08 is: 538,498.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,022.08 : 954,990.60 = 390,216.08 : x
  2. Step 2: Convert to fraction form
    692,022.08/954,990.60 = 390,216.08/x
  3. Step 3: Cross multiply
    692,022.08x = 954,990.60 × 390,216.08
  4. Step 4: Simplify right side
    692,022.08x = 372,652,688,368.85
  5. Step 5: Solve for x
    x = 372,652,688,368.85/692,022.08
  6. Step 6: Final answer
    x = 538,498.26

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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.