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Finding the Fourth Proportional to 891,047.42, 1,336,260 and 358,430.30

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Solution

The fourth proportional to 891,047.42, 1,336,260 and 358,430.30 is: 537,520.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,047.42 : 1,336,260 = 358,430.30 : x
  2. Step 2: Convert to fraction form
    891,047.42/1,336,260 = 358,430.30/x
  3. Step 3: Cross multiply
    891,047.42x = 1,336,260 × 358,430.30
  4. Step 4: Simplify right side
    891,047.42x = 478,956,072,678
  5. Step 5: Solve for x
    x = 478,956,072,678/891,047.42
  6. Step 6: Final answer
    x = 537,520.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.