Finding the Fourth Proportional to 885,064,984.23, 1,221,357,661.14 and 488,579,457.99
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Solution
The fourth proportional to 885,064,984.23, 1,221,357,661.14 and 488,579,457.99 is: 674,221,977.74
Step by Step Solution
- Step 1: Write the proportion equation
885,064,984.23 : 1,221,357,661.14 = 488,579,457.99 : x - Step 2: Convert to fraction form
885,064,984.23/1,221,357,661.14 = 488,579,457.99/x - Step 3: Cross multiply
885,064,984.23x = 1,221,357,661.14 × 488,579,457.99 - Step 4: Simplify right side
885,064,984.23x = 596,730,264,091,715,328 - Step 5: Solve for x
x = 596,730,264,091,715,328/885,064,984.23 - Step 6: Final answer
x = 674,221,977.74
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Double scale
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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.