Home / 612,475.36-918,899.56-313,166.20

Finding the Fourth Proportional to 612,475.36, 918,899.56 and 313,166.20

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Solution

The fourth proportional to 612,475.36, 918,899.56 and 313,166.20 is: 469,844.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,475.36 : 918,899.56 = 313,166.20 : x
  2. Step 2: Convert to fraction form
    612,475.36/918,899.56 = 313,166.20/x
  3. Step 3: Cross multiply
    612,475.36x = 918,899.56 × 313,166.20
  4. Step 4: Simplify right side
    612,475.36x = 287,768,283,386.87
  5. Step 5: Solve for x
    x = 287,768,283,386.87/612,475.36
  6. Step 6: Final answer
    x = 469,844.67

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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.