Home / 287,680,896,677.40-431,521,345,016.10-268,089,855,653.40

Finding the Fourth Proportional to 287,680,896,677.40, 431,521,345,016.10 and 268,089,855,653.40

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Solution

The fourth proportional to 287,680,896,677.40, 431,521,345,016.10 and 268,089,855,653.40 is: 402,134,783,480.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,680,896,677.40 : 431,521,345,016.10 = 268,089,855,653.40 : x
  2. Step 2: Convert to fraction form
    287,680,896,677.40/431,521,345,016.10 = 268,089,855,653.40/x
  3. Step 3: Cross multiply
    287,680,896,677.40x = 431,521,345,016.10 × 268,089,855,653.40
  4. Step 4: Simplify right side
    287,680,896,677.40x = 115,686,495,096,727,266,131,968
  5. Step 5: Solve for x
    x = 115,686,495,096,727,266,131,968/287,680,896,677.40
  6. Step 6: Final answer
    x = 402,134,783,480.10

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1.5x scale

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.