Home / 489,931,358.40-734,881,291.20-162,421,984.80

Finding the Fourth Proportional to 489,931,358.40, 734,881,291.20 and 162,421,984.80

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Solution

The fourth proportional to 489,931,358.40, 734,881,291.20 and 162,421,984.80 is: 243,627,756.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,931,358.40 : 734,881,291.20 = 162,421,984.80 : x
  2. Step 2: Convert to fraction form
    489,931,358.40/734,881,291.20 = 162,421,984.80/x
  3. Step 3: Cross multiply
    489,931,358.40x = 734,881,291.20 × 162,421,984.80
  4. Step 4: Simplify right side
    489,931,358.40x = 119,360,877,909,090,784
  5. Step 5: Solve for x
    x = 119,360,877,909,090,784/489,931,358.40
  6. Step 6: Final answer
    x = 243,627,756.96

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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.