Home / 579,492,721.70-869,239,082.55-349,343,339.30

Finding the Fourth Proportional to 579,492,721.70, 869,239,082.55 and 349,343,339.30

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Solution

The fourth proportional to 579,492,721.70, 869,239,082.55 and 349,343,339.30 is: 524,015,008.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,492,721.70 : 869,239,082.55 = 349,343,339.30 : x
  2. Step 2: Convert to fraction form
    579,492,721.70/869,239,082.55 = 349,343,339.30/x
  3. Step 3: Cross multiply
    579,492,721.70x = 869,239,082.55 × 349,343,339.30
  4. Step 4: Simplify right side
    579,492,721.70x = 303,662,883,748,085,376
  5. Step 5: Solve for x
    x = 303,662,883,748,085,376/579,492,721.70
  6. Step 6: Final answer
    x = 524,015,008.95

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Double scale
Find fourth proportional to 579,492,722.70, 869,239,084.05 and 349,343,340.30
Similar ratio
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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.