Home / 513,075.17-708,044.70-286,720.67

Finding the Fourth Proportional to 513,075.17, 708,044.70 and 286,720.67

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Solution

The fourth proportional to 513,075.17, 708,044.70 and 286,720.67 is: 395,675.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,075.17 : 708,044.70 = 286,720.67 : x
  2. Step 2: Convert to fraction form
    513,075.17/708,044.70 = 286,720.67/x
  3. Step 3: Cross multiply
    513,075.17x = 708,044.70 × 286,720.67
  4. Step 4: Simplify right side
    513,075.17x = 203,011,049,340.35
  5. Step 5: Solve for x
    x = 203,011,049,340.35/513,075.17
  6. Step 6: Final answer
    x = 395,675.06

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Double scale
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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.