Home / 420,877,424.10-631,316,136.15-191,294,912.10

Finding the Fourth Proportional to 420,877,424.10, 631,316,136.15 and 191,294,912.10

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Solution

The fourth proportional to 420,877,424.10, 631,316,136.15 and 191,294,912.10 is: 286,942,368.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,877,424.10 : 631,316,136.15 = 191,294,912.10 : x
  2. Step 2: Convert to fraction form
    420,877,424.10/631,316,136.15 = 191,294,912.10/x
  3. Step 3: Cross multiply
    420,877,424.10x = 631,316,136.15 × 191,294,912.10
  4. Step 4: Simplify right side
    420,877,424.10x = 120,767,564,772,125,872
  5. Step 5: Solve for x
    x = 120,767,564,772,125,872/420,877,424.10
  6. Step 6: Final answer
    x = 286,942,368.15

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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.