Home / 711,289,676.40-1,064,918,975.40-638,730,265.20

Finding the Fourth Proportional to 711,289,676.40, 1,064,918,975.40 and 638,730,265.20

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Solution

The fourth proportional to 711,289,676.40, 1,064,918,975.40 and 638,730,265.20 is: 956,285,465.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,289,676.40 : 1,064,918,975.40 = 638,730,265.20 : x
  2. Step 2: Convert to fraction form
    711,289,676.40/1,064,918,975.40 = 638,730,265.20/x
  3. Step 3: Cross multiply
    711,289,676.40x = 1,064,918,975.40 × 638,730,265.20
  4. Step 4: Simplify right side
    711,289,676.40x = 680,195,979,573,754,368
  5. Step 5: Solve for x
    x = 680,195,979,573,754,368/711,289,676.40
  6. Step 6: Final answer
    x = 956,285,465.88

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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.