Home / 1,328,020,169.40-1,992,030,254.10-407,895,031.80

Finding the Fourth Proportional to 1,328,020,169.40, 1,992,030,254.10 and 407,895,031.80

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Solution

The fourth proportional to 1,328,020,169.40, 1,992,030,254.10 and 407,895,031.80 is: 611,842,547.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,020,169.40 : 1,992,030,254.10 = 407,895,031.80 : x
  2. Step 2: Convert to fraction form
    1,328,020,169.40/1,992,030,254.10 = 407,895,031.80/x
  3. Step 3: Cross multiply
    1,328,020,169.40x = 1,992,030,254.10 × 407,895,031.80
  4. Step 4: Simplify right side
    1,328,020,169.40x = 812,539,243,842,681,600
  5. Step 5: Solve for x
    x = 812,539,243,842,681,600/1,328,020,169.40
  6. Step 6: Final answer
    x = 611,842,547.70

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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.