Home / 920,700,143.31-1,270,566,707.54-497,313,802.58

Finding the Fourth Proportional to 920,700,143.31, 1,270,566,707.54 and 497,313,802.58

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Solution

The fourth proportional to 920,700,143.31, 1,270,566,707.54 and 497,313,802.58 is: 686,293,322.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,700,143.31 : 1,270,566,707.54 = 497,313,802.58 : x
  2. Step 2: Convert to fraction form
    920,700,143.31/1,270,566,707.54 = 497,313,802.58/x
  3. Step 3: Cross multiply
    920,700,143.31x = 1,270,566,707.54 × 497,313,802.58
  4. Step 4: Simplify right side
    920,700,143.31x = 631,870,360,749,428,736
  5. Step 5: Solve for x
    x = 631,870,360,749,428,736/920,700,143.31
  6. Step 6: Final answer
    x = 686,293,322.90

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1.5x scale

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.