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Finding the Fourth Proportional to 630,354.72, 869,854.23 and 358,384.26

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Solution

The fourth proportional to 630,354.72, 869,854.23 and 358,384.26 is: 494,550.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,354.72 : 869,854.23 = 358,384.26 : x
  2. Step 2: Convert to fraction form
    630,354.72/869,854.23 = 358,384.26/x
  3. Step 3: Cross multiply
    630,354.72x = 869,854.23 × 358,384.26
  4. Step 4: Simplify right side
    630,354.72x = 311,742,064,526.42
  5. Step 5: Solve for x
    x = 311,742,064,526.42/630,354.72
  6. Step 6: Final answer
    x = 494,550.22

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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.