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Finding the Fourth Proportional to 630,316.10, 869,830.61 and 343,830.03

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Solution

The fourth proportional to 630,316.10, 869,830.61 and 343,830.03 is: 474,482.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,316.10 : 869,830.61 = 343,830.03 : x
  2. Step 2: Convert to fraction form
    630,316.10/869,830.61 = 343,830.03/x
  3. Step 3: Cross multiply
    630,316.10x = 869,830.61 × 343,830.03
  4. Step 4: Simplify right side
    630,316.10x = 299,073,883,012.07
  5. Step 5: Solve for x
    x = 299,073,883,012.07/630,316.10
  6. Step 6: Final answer
    x = 474,482.38

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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.