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Finding the Fourth Proportional to 630,210.32, 869,689.71 and 343,729.52

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Solution

The fourth proportional to 630,210.32, 869,689.71 and 343,729.52 is: 474,346.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,210.32 : 869,689.71 = 343,729.52 : x
  2. Step 2: Convert to fraction form
    630,210.32/869,689.71 = 343,729.52/x
  3. Step 3: Cross multiply
    630,210.32x = 869,689.71 × 343,729.52
  4. Step 4: Simplify right side
    630,210.32x = 298,938,026,567.24
  5. Step 5: Solve for x
    x = 298,938,026,567.24/630,210.32
  6. Step 6: Final answer
    x = 474,346.45

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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.