Home / 711,038,370.78-1,065,589,152.54-400,294,189.26

Finding the Fourth Proportional to 711,038,370.78, 1,065,589,152.54 and 400,294,189.26

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Solution

The fourth proportional to 711,038,370.78, 1,065,589,152.54 and 400,294,189.26 is: 599,896,100.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,038,370.78 : 1,065,589,152.54 = 400,294,189.26 : x
  2. Step 2: Convert to fraction form
    711,038,370.78/1,065,589,152.54 = 400,294,189.26/x
  3. Step 3: Cross multiply
    711,038,370.78x = 1,065,589,152.54 × 400,294,189.26
  4. Step 4: Simplify right side
    711,038,370.78x = 426,549,145,900,249,728
  5. Step 5: Solve for x
    x = 426,549,145,900,249,728/711,038,370.78
  6. Step 6: Final answer
    x = 599,896,100.45

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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.