Home / 390,955,911,602.40-586,433,867,403.60-155,404,254,290.40

Finding the Fourth Proportional to 390,955,911,602.40, 586,433,867,403.60 and 155,404,254,290.40

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Solution

The fourth proportional to 390,955,911,602.40, 586,433,867,403.60 and 155,404,254,290.40 is: 233,106,381,435.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,955,911,602.40 : 586,433,867,403.60 = 155,404,254,290.40 : x
  2. Step 2: Convert to fraction form
    390,955,911,602.40/586,433,867,403.60 = 155,404,254,290.40/x
  3. Step 3: Cross multiply
    390,955,911,602.40x = 586,433,867,403.60 × 155,404,254,290.40
  4. Step 4: Simplify right side
    390,955,911,602.40x = 91,134,317,854,491,762,753,536
  5. Step 5: Solve for x
    x = 91,134,317,854,491,762,753,536/390,955,911,602.40
  6. Step 6: Final answer
    x = 233,106,381,435.60

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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.