Home / 1,243,350,729.40-1,864,700,999.70-369,716,783.80

Finding the Fourth Proportional to 1,243,350,729.40, 1,864,700,999.70 and 369,716,783.80

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Solution

The fourth proportional to 1,243,350,729.40, 1,864,700,999.70 and 369,716,783.80 is: 554,478,507.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,350,729.40 : 1,864,700,999.70 = 369,716,783.80 : x
  2. Step 2: Convert to fraction form
    1,243,350,729.40/1,864,700,999.70 = 369,716,783.80/x
  3. Step 3: Cross multiply
    1,243,350,729.40x = 1,864,700,999.70 × 369,716,783.80
  4. Step 4: Simplify right side
    1,243,350,729.40x = 689,411,256,357,728,768
  5. Step 5: Solve for x
    x = 689,411,256,357,728,768/1,243,350,729.40
  6. Step 6: Final answer
    x = 554,478,507.20

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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.