Home / 1,287,716,454.20-1,931,574,681.30-1,081,092,193.40

Finding the Fourth Proportional to 1,287,716,454.20, 1,931,574,681.30 and 1,081,092,193.40

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Solution

The fourth proportional to 1,287,716,454.20, 1,931,574,681.30 and 1,081,092,193.40 is: 1,621,638,290.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,716,454.20 : 1,931,574,681.30 = 1,081,092,193.40 : x
  2. Step 2: Convert to fraction form
    1,287,716,454.20/1,931,574,681.30 = 1,081,092,193.40/x
  3. Step 3: Cross multiply
    1,287,716,454.20x = 1,931,574,681.30 × 1,081,092,193.40
  4. Step 4: Simplify right side
    1,287,716,454.20x = 2,088,210,308,922,523,136
  5. Step 5: Solve for x
    x = 2,088,210,308,922,523,136/1,287,716,454.20
  6. Step 6: Final answer
    x = 1,621,638,290.10

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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.