Home / 290,326,793.40-435,490,190.10-128,768,729.40

Finding the Fourth Proportional to 290,326,793.40, 435,490,190.10 and 128,768,729.40

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Solution

The fourth proportional to 290,326,793.40, 435,490,190.10 and 128,768,729.40 is: 193,153,094.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,326,793.40 : 435,490,190.10 = 128,768,729.40 : x
  2. Step 2: Convert to fraction form
    290,326,793.40/435,490,190.10 = 128,768,729.40/x
  3. Step 3: Cross multiply
    290,326,793.40x = 435,490,190.10 × 128,768,729.40
  4. Step 4: Simplify right side
    290,326,793.40x = 56,077,518,445,341,464
  5. Step 5: Solve for x
    x = 56,077,518,445,341,464/290,326,793.40
  6. Step 6: Final answer
    x = 193,153,094.10

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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.