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Finding the Fourth Proportional to 612,157.24, 918,330.94 and 312,475.67

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Solution

The fourth proportional to 612,157.24, 918,330.94 and 312,475.67 is: 468,762.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,157.24 : 918,330.94 = 312,475.67 : x
  2. Step 2: Convert to fraction form
    612,157.24/918,330.94 = 312,475.67/x
  3. Step 3: Cross multiply
    612,157.24x = 918,330.94 × 312,475.67
  4. Step 4: Simplify right side
    612,157.24x = 286,956,075,000.91
  5. Step 5: Solve for x
    x = 286,956,075,000.91/612,157.24
  6. Step 6: Final answer
    x = 468,762.04

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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.