Home / 402,408,051.80-603,612,077.70-279,964,045.40

Finding the Fourth Proportional to 402,408,051.80, 603,612,077.70 and 279,964,045.40

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Solution

The fourth proportional to 402,408,051.80, 603,612,077.70 and 279,964,045.40 is: 419,946,068.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,408,051.80 : 603,612,077.70 = 279,964,045.40 : x
  2. Step 2: Convert to fraction form
    402,408,051.80/603,612,077.70 = 279,964,045.40/x
  3. Step 3: Cross multiply
    402,408,051.80x = 603,612,077.70 × 279,964,045.40
  4. Step 4: Simplify right side
    402,408,051.80x = 168,989,679,125,191,136
  5. Step 5: Solve for x
    x = 168,989,679,125,191,136/402,408,051.80
  6. Step 6: Final answer
    x = 419,946,068.10

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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.