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Finding the Fourth Proportional to 630,289.51, 869,805.08 and 343,810.87

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Solution

The fourth proportional to 630,289.51, 869,805.08 and 343,810.87 is: 474,462.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,289.51 : 869,805.08 = 343,810.87 : x
  2. Step 2: Convert to fraction form
    630,289.51/869,805.08 = 343,810.87/x
  3. Step 3: Cross multiply
    630,289.51x = 869,805.08 × 343,810.87
  4. Step 4: Simplify right side
    630,289.51x = 299,048,439,566.17
  5. Step 5: Solve for x
    x = 299,048,439,566.17/630,289.51
  6. Step 6: Final answer
    x = 474,462.03

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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.