Home / 1,290,319,828,178.60-1,780,635,154,480.50-712,251,290,443.45

Finding the Fourth Proportional to 1,290,319,828,178.60, 1,780,635,154,480.50 and 712,251,290,443.45

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Solution

The fourth proportional to 1,290,319,828,178.60, 1,780,635,154,480.50 and 712,251,290,443.45 is: 982,903,353,797.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,319,828,178.60 : 1,780,635,154,480.50 = 712,251,290,443.45 : x
  2. Step 2: Convert to fraction form
    1,290,319,828,178.60/1,780,635,154,480.50 = 712,251,290,443.45/x
  3. Step 3: Cross multiply
    1,290,319,828,178.60x = 1,780,635,154,480.50 × 712,251,290,443.45
  4. Step 4: Simplify right side
    1,290,319,828,178.60x = 1,268,259,686,587,707,913,404,416
  5. Step 5: Solve for x
    x = 1,268,259,686,587,707,913,404,416/1,290,319,828,178.60
  6. Step 6: Final answer
    x = 982,903,353,797.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.