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Finding the Fourth Proportional to 630,408.56, 869,959.60 and 358,476.48

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Solution

The fourth proportional to 630,408.56, 869,959.60 and 358,476.48 is: 494,695.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,408.56 : 869,959.60 = 358,476.48 : x
  2. Step 2: Convert to fraction form
    630,408.56/869,959.60 = 358,476.48/x
  3. Step 3: Cross multiply
    630,408.56x = 869,959.60 × 358,476.48
  4. Step 4: Simplify right side
    630,408.56x = 311,860,054,254.02
  5. Step 5: Solve for x
    x = 311,860,054,254.02/630,408.56
  6. Step 6: Final answer
    x = 494,695.15

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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.