Home / 866,133,071.85-1,299,199,607.78-399,793,594.35

Finding the Fourth Proportional to 866,133,071.85, 1,299,199,607.78 and 399,793,594.35

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Solution

The fourth proportional to 866,133,071.85, 1,299,199,607.78 and 399,793,594.35 is: 599,690,391.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,133,071.85 : 1,299,199,607.78 = 399,793,594.35 : x
  2. Step 2: Convert to fraction form
    866,133,071.85/1,299,199,607.78 = 399,793,594.35/x
  3. Step 3: Cross multiply
    866,133,071.85x = 1,299,199,607.78 × 399,793,594.35
  4. Step 4: Simplify right side
    866,133,071.85x = 519,411,680,970,477,504
  5. Step 5: Solve for x
    x = 519,411,680,970,477,504/866,133,071.85
  6. Step 6: Final answer
    x = 599,690,391.53

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Double scale
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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.