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Finding the Fourth Proportional to 520,387.07, 718,094.23 and 316,409.67

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Solution

The fourth proportional to 520,387.07, 718,094.23 and 316,409.67 is: 436,621.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,387.07 : 718,094.23 = 316,409.67 : x
  2. Step 2: Convert to fraction form
    520,387.07/718,094.23 = 316,409.67/x
  3. Step 3: Cross multiply
    520,387.07x = 718,094.23 × 316,409.67
  4. Step 4: Simplify right side
    520,387.07x = 227,211,957,552.18
  5. Step 5: Solve for x
    x = 227,211,957,552.18/520,387.07
  6. Step 6: Final answer
    x = 436,621.07

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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.