Home / 430,779,100.53-645,678,492.14-262,145,943.78

Finding the Fourth Proportional to 430,779,100.53, 645,678,492.14 and 262,145,943.78

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Solution

The fourth proportional to 430,779,100.53, 645,678,492.14 and 262,145,943.78 is: 392,920,634.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,779,100.53 : 645,678,492.14 = 262,145,943.78 : x
  2. Step 2: Convert to fraction form
    430,779,100.53/645,678,492.14 = 262,145,943.78/x
  3. Step 3: Cross multiply
    430,779,100.53x = 645,678,492.14 × 262,145,943.78
  4. Step 4: Simplify right side
    430,779,100.53x = 169,261,997,698,721,696
  5. Step 5: Solve for x
    x = 169,261,997,698,721,696/430,779,100.53
  6. Step 6: Final answer
    x = 392,920,634.94

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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.