Home / 711,289,682.40-1,064,918,984.40-638,730,271.20

Finding the Fourth Proportional to 711,289,682.40, 1,064,918,984.40 and 638,730,271.20

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Solution

The fourth proportional to 711,289,682.40, 1,064,918,984.40 and 638,730,271.20 is: 956,285,474.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,289,682.40 : 1,064,918,984.40 = 638,730,271.20 : x
  2. Step 2: Convert to fraction form
    711,289,682.40/1,064,918,984.40 = 638,730,271.20/x
  3. Step 3: Cross multiply
    711,289,682.40x = 1,064,918,984.40 × 638,730,271.20
  4. Step 4: Simplify right side
    711,289,682.40x = 680,195,991,711,840,640
  5. Step 5: Solve for x
    x = 680,195,991,711,840,640/711,289,682.40
  6. Step 6: Final answer
    x = 956,285,474.88

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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.